CVE-2025-52993

A race condition in the Nix, Lix, and Guix package managers enables changing the ownership of arbitrary files to the UID and GID of the build user (e.g., nixbld* or guixbuild*). This affects Nix before 2.24.15, 2.26.4, 2.28.4, and 2.29.1; Lix before 2.91.2, 2.92.2, and 2.93.1; and Guix before 1.4.0-38.0e79d5b.

Published: 2025-06-27 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-52993 is rated Low Risk (30.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-52993

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-23 0.01% 0.07% +0.06%
2 2025-06-28 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-52993

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.6 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.4 3.7 [email protected]

Weakness enumeration for CVE-2025-52993

OS Trackers for CVE-2025-52993

vendor priority summary link
alpine medium CVE-2025-52993: 1 source package rows (nix); 13 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 13. https://security.alpinelinux.org/vuln/CVE-2025-52993
debian end-of-life CVE-2025-52993 end-of-life priority: Debian including 1 source packages (guix), 2 status rows across 2 suites (bullseye, sid): open 2. https://security-tracker.debian.org/tracker/CVE-2025-52993
ubuntu medium CVE-2025-52993 medium priority: Ubuntu including 1 source packages (guix), 6 status rows across 6 suites (jammy, noble, oracular, plucky, questing, upstream): needs-triage 3, ignored 2, DNE 1. https://ubuntu.com/security/CVE-2025-52993

Affected software / configurations for CVE-2025-52993

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-52993

cvelogic Threat Intelligence